[proposal] plug an i18n engine to EJS

[UrielCh]

Hi,

I would like to port the i18n engine I wrote for tomcat/JSP (15 years ago) to EJS.

The implementation is pretty simple.

Right now a common way to add translation is to use code like that:

<%=__('TRANSLATION_KEY {1} AND {2}', variable1, variable2)%>
// or
<%-__('TRANSLATION_KEY {1} AND {2}', variable1, variable2)%>

the start tag is 7 char long (can be reduced to 6 with a single-letter translate function)
the ending tag is 3 char long

With my i18n style the same code will be converted to:

<%=`TRANSLATION_KEY ${variable1} AND ${variable2}`%>
// or
<%-`TRANSLATION_KEY ${variable1} AND ${variable2}`%>

the start tag is 4 char long
the ending tag is 3 char long

This version is much shorter and uses Template literals.

under the hood, a context variable should contain:

• the lang.
• the translate function.

A default empty translation function can be added by default, so all previous code will still be compatible.

In the first place, I was thinking about supporting a new tag <%`TEXT ${var}`%> but I do not know if the content should be protected or not by default.

Please give me some feedback.

[UrielCh]

A test version is available here: here

some tests had been added too.